My rear derailleur took a knock from a fall, and the entire shifting range moved inwards by about one sprocket width. I suspect, but am not sure, that the mech hanger got slightly bent (could be completely wrong, not really sure how to tell).
I was able to counteract this by adjusting the limit screws, and the derailleur seems to be shifting well over the entire range. The way it's set up currently I can no longer push it into the spokes by hand (i.e. it's the limit screw and not cable tension that stops it).
I am tempted to just leave things are they are.
Is it OK to ride like this, or are there compelling reasons (safety, long-term reliability, etc) to figure out what got damaged and repair/replace it?
Here are some pics: